Vertex Based Motion

cwang5 · March 19, 2009, 03:18

Hi, I'm trying to simulate a moving rigid "tail" behind a block, and while searching in the forum came across the term "vertex based motion", but could not find anything else. My question is that if it is the correct direction to look into, and if so, if it is implemented in OF-1.5 and if there is any documentation and/or tutorials for such setup? Thanks for the help.

John

elorriaux · March 19, 2009, 05:43

Hello,

i've not found examples or doc about vertex based motion solvers. Try to search 'pointDisplacement', 'displacementLaplacian', 'displacementSBRStress' and you will find a few tips on how to use those motion solvers.

Be careful that the displacement is relative to the original mesh and not the previous time step.

Sincerely, Etienne.

cwang5 · March 20, 2009, 02:17

Hi Etienne,

Thanks for the reply. I tried searching for the terms you mentioned, but the forum returned nothing when searching for the last two. For the pointDisplacement, is it sufficient to simply modify the dynMeshDict and pointMotionU, or do I have to modify the solver? Thanks.

March 19, 2009, 03:18	Vertex Based Motion	#1
cwang5 Member John Wang Join Date: Mar 2009 Location: Singapore Posts: 73 Rep Power: 17	Hi, I'm trying to simulate a moving rigid "tail" behind a block, and while searching in the forum came across the term "vertex based motion", but could not find anything else. My question is that if it is the correct direction to look into, and if so, if it is implemented in OF-1.5 and if there is any documentation and/or tutorials for such setup? Thanks for the help. John

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March 19, 2009, 05:43		#2
elorriaux Member Etienne Lorriaux Join Date: Mar 2009 Location: Compiegne, France Posts: 45 Rep Power: 17	Hello, i've not found examples or doc about vertex based motion solvers. Try to search 'pointDisplacement', 'displacementLaplacian', 'displacementSBRStress' and you will find a few tips on how to use those motion solvers. Be careful that the displacement is relative to the original mesh and not the previous time step. Sincerely, Etienne.

March 20, 2009, 02:17		#3
cwang5 Member John Wang Join Date: Mar 2009 Location: Singapore Posts: 73 Rep Power: 17	Hi Etienne, Thanks for the reply. I tried searching for the terms you mentioned, but the forum returned nothing when searching for the last two. For the pointDisplacement, is it sufficient to simply modify the dynMeshDict and pointMotionU, or do I have to modify the solver? Thanks.